Portable lighting device



FIG. 1 is a perspective view taken from the front, top and right side of a portable lighting device showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view thereof taken from the rear, top and right side thereof.

The broken line showing of the clip detail and directional arrows are for illustrative purposes only and form no part of the claimed design invention. 

The ornamental design for a portable lighting device, as shown and described. 